Sensi thermostat models have different features and different compatibility requirements, depending on the respective model. Check out each product’s specific page to learn more about each model, and their features.
If you aren’t sure what model you’re interested in, you can always check our compatibility tool as well to see what Sensi model works with your current system.
C Wire Compatibility
Some Sensi models require a “C” wire for operation. Other Sensi models may only require a “C” wire if it is controlling a specific type of HVAC system.
- Sensi Lite and Sensi smart thermostats: Only requires a “C” wire with the following HVAC systems: heat pumps, heat-only systems, and cool-only systems.
- Sensi Touch and Touch 2 smart thermostats: Requires a “C” wire for all applications.
| System Type | Sensi Lite smart thermostat | Sensi smart thermostat | Sensi Touch smart thermostat | Sensi Touch 2 smart thermostat |
|---|---|---|---|---|
 |  |  |  | |
Conventional Heating and Cooling | Yes1 | Yes2 | Yes3 | Yes3 |
Heat Only | Yes3 | Yes3 | Yes3 | Yes3 |
Cool Only | Yes3 | Yes3 | Yes3 | Yes3 |
Heat Pump/Geothermal | Yes1,3 | Yes3 | Yes3 | Yes3 |
Whole Home Humidifiers / Dehumidifiers | No | Yes | Yes | Yes |
Communicating/Proprietary System | No | No | No | No |
Line Voltage | No | No | No | No |
Millivolt | No | No | No | No |
RV/Camper 12VDC Applications | No | No | No | No |
1 Compatible with multi-stage systems up to 1H/2C or 2H/1C |